Differences From Artifact [7201657da1]:
- File
src/resolver.cr
— part of check-in
[af207d1100]
at
2021-03-05 01:34:03
on branch trunk
— Use IO::Memory to build the raw data
This is much nicer than using Bytes and fixes always sending 512 bytes. (user: js, size: 3030) [annotate] [blame] [check-ins using]
To Artifact [e371b89446]:
- File src/resolver.cr — part of check-in [8c89490d20] at 2021-03-06 21:34:00 on branch trunk — Add receive loop (user: js, size: 3629) [annotate] [blame] [check-ins using]
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sock : UDPSocket
case used_ns.family
when Socket::Family::INET6
if @v6_sock.nil?
@v6_sock = s = UDPSocket.new
s.bind "::", 0
end
sock = @v6_sock.not_nil!
when Socket::Family::INET
if @v4_sock.nil?
@v4_sock = s = UDPSocket.new
s.bind "0.0.0.0", 0
end
sock = @v4_sock.not_nil!
else
raise ArgumentError.new("Nameserver must be INET or INET6")
end
sock.send(context.raw_data, used_ns)
end
def stop : Nil
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sock : UDPSocket
case used_ns.family
when Socket::Family::INET6
if @v6_sock.nil?
@v6_sock = s = UDPSocket.new
s.bind "::", 0
start_recv_loop(s)
end
sock = @v6_sock.not_nil!
when Socket::Family::INET
if @v4_sock.nil?
@v4_sock = s = UDPSocket.new
s.bind "0.0.0.0", 0
start_recv_loop(s)
end
sock = @v4_sock.not_nil!
else
raise ArgumentError.new("Nameserver must be INET or INET6")
end
sock.send(context.raw_data, used_ns)
end
def start_recv_loop(sock : UDPSocket) : Nil
spawn do
buf = Bytes.new(0x10000)
until sock.closed?
begin
len, addr = sock.receive(buf)
rescue ex : IO::Error
p ex
break if sock.closed? && ex.os_error.nil?
raise ex
end
handle_packet(buf[0, len], addr)
end
end
end
def handle_packet(packet : Bytes, sender : Socket::IPAddress)
p packet
end
def stop : Nil
@v6_sock.try { |s| s.close }
@v4_sock.try { |s| s.close }
end
end
end
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